S
M
T
W
T
F
S
26
82°
58°
27
83°
72°
28
79°
67°
29
69°
60°
30
66°
52°
1
69°
49°
2
73°
44°
3
80°
41°
4
81°
60°
5
73°
60°
6
60°
50°
7
71°
46°
8
75°
46°
9
84°
55°
10
78°
59°
11
76°
52°
12
80°
47°
13
83°
53°
14
79°
48°
15
91°
57°
16
85°
74°
17
89°
68°
18
86°
73°
19
82°
67°
20
73°
67°
21
73°
65°
22
77°
67°
23
80°
64°
24
84°
63°
25
83°
66°
26
86°
65°
27
84°
67°
28
84°
66°
29
83°
63°
30
84°
63°
31
85°
62°
1
88°
67°
2
88°
66°
3
85°
64°
4
81°
60°
5
83°
63°
6
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Austin
Austin's May 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 60° and 73°. The average high for May is 83° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Austin. See also: June | July | August.